| Author (and author names) | Published between | No. of references | No. of described taxa (valid) |
|---|---|---|---|
| Kaneko, G. | 2020 | 1 | – |
| Kaneko, T. | 2001 | 1 | – |
| Kannari, T. | 1980 | 1 | – |
| Kannowski, P. B. | 1954–1997 | 12 | – |
| Kanturski, M. | 2021 | 1 | 1 |
| Kaplin, V. G. | 1989 | 1 | – |
| Kappel, A. W. | 1896 | 1 | – |
| Kapyszewska, E. | 1981 | 1 | – |
| Karaman, C. | 2011–2025 | 27 | 13 |
| Karaman, G. S. | 2003–2005 | 2 | – |
| Karaman, M.; Karaman, M. G. | 2003–2011 | 8 | 2 |
| Karavaiev, V.; Karavajev, V.; Karawaiew, W.; Karawajew, W. | 1906–1937 | 50 | 115 |
| Karl, H. | – | – | – |
| Karl, H.-V. | 2011 | 2 | 1 |
| Karmaly, K. A. | 2004–2012 | 4 | 4 |
| Karpinski, J. J. | 1956 | 1 | – |
| Karube, H. | 2011 | 1 | – |
| Kaschef, A. H. | 1982 | 1 | – |
| Kaspari, M. | 1995–2009 | 12 | – |
| Kasugai, M. | 1983 | 1 | – |
| Katedra Ochrony Lasu i Ekologii | 1984 | 1 | – |
| Kato, K. | 2013 | 1 | – |
| Kato, L. M. | 2003–2010 | 3 | – |
| Kattan, G. H. | 1997 | 1 | – |
| Katzke, J. | 2018–2022 | 5 | 2 |
| Kauffmann, S. | 1993 | 2 | – |
| Kaufmann, B. | 2019–2025 | 3 | 4 |
| Kaufmann, B. E. | 1998–2017 | 2 | 1 |
| Kaulfuss, U. | 2014–2016 | 2 | 4 |
| Kauppinen, S. N. | 2009 | 1 | – |
| Kaur, A. | 2009 | 1 | – |
| Kaur, I. | 2011 | 1 | – |
| Kaur, J. | 2023 | 1 | – |
| Kaur, P. | 2023 | 1 | – |
| Kaur, S. | 1981 | 1 | – |
| Kautz, S. | 2009 | 2 | – |
| Kawahara, Y. | 1999 | 1 | – |
| Kawamura, K. | 2022 | 1 | – |
| Kawazoe, A. | 1988–1994 | 2 | – |
| Kazmi, S. I. | 2020 | 1 | – |
| Keall, J. B. | 1980–1981 | 4 | – |
| Keegans, S. J. | 1990–2003 | 6 | – |
| Keilbach, R. | 1982 | 1 | – |
| Keister, M. | 1963 | 1 | – |
| Kelber, C. | 2009 | 1 | – |
| Keller, L. | 1989–2022 | 35 | – |
| Keller, R. A.; Keller, R. | 2000–2025 | 13 | 2 |
| Kellner, K. | 2011 | 1 | – |
| Kelly, R. S. | 2018 | 1 | – |
| Kempf, W. W. | 1949–1978 | 95 | 143 |
| Kendrick, P. G. | 1991 | 1 | – |
| Kenne, M. | 1994 | 1 | – |
| Kennedy, C. H. | 1933–1940 | 6 | 4 |
| Kennett, S. M. | 2024 | 1 | – |
| Kergoat, G. J. | 2007 | 1 | – |
| Kerkhofs, H. L. P. | 1985 | 1 | – |
| Kermarrec, A. | 1976–1985 | 4 | – |
| Kern, F. | 1995–1997 | 8 | – |
| Kerr, W. E. | 1961 | 1 | – |
| Kessel, E. W. | 1955 | 1 | – |